Comprehensive Description

Stomach contents in G. wuelkeri and G. boylei showed polychaetes, copepods, amphipods and isopods. Mature females have few and large eggs in oviducts, measuring from 10-18 mm in length, suggesting a continuous spawning mode as observed in other cirrate octopods. Individuals of Grimpoteuthis sp. have been observed resting and crawling on the sea bottom, swimming basically by the use of fins and also by arm-web contractions. As a response to disturbance, individuals have been observed in web inversion, with arms and web upturned, oral surface facing outward, completely covering mantle, head and fins.